Greater Psionic Fist

(Expanded Psionics Handbook, page 47, DnD 3.5)

[Psionic]

You can charge your unarmed strike or natural weapon with additional damage potential.

Prerequisite

Psionic Fist, STR 13, base attack bonus +5

Benefit

When you use the Psionic Fist feat, your unarmed attack or attack with a natural weapon deals an extra 4d6 points of damage instead of an extra 2d6 points.